DLL - Calling application notification upon destroy

Is there any way to detect when an application that is calling my dll is
about to be destroyed?
I need to close several files if the calling application has not done so,
therefore I need to detect when the calling application is about to be
destroyed and clean up the files and variables I have used in the dll.

You need to implement DllMain, the handle your cleanup tasks when you
receive a PROCESS_DETACH notification.
Check out:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/_core_initialize_non.2d.mfc_dlls.asp
"Joe Estock" <jestock@NOSPAMnutextonline.com> wrote in message
news:vshql393gd63ba@corp.supernews.com...
> Is there any way to detect when an application that is calling my dll is
> about to be destroyed?
>
> I need to close several files if the calling application has not done so,
> therefore I need to detect when the calling application is about to be
> destroyed and clean up the files and variables I have used in the dll.
>
>

Yes and no - read very CAREFULLY what you may and more important may NOT do
on PROCESS_ATTACH/DETACH...
"Tom Jones" <tomjones16@hotmail.com> wrote in message
news:%23Um9%23WstDHA.2368@TK2MSFTNGP09.phx.gbl...
> You need to implement DllMain, the handle your cleanup tasks when you
> receive a PROCESS_DETACH notification.
>
> Check out:
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/_core_initialize_non.2d.mfc_dlls.asp
>
> "Joe Estock" <jestock@NOSPAMnutextonline.com> wrote in message
> news:vshql393gd63ba@corp.supernews.com...
> > Is there any way to detect when an application that is calling my dll is
> > about to be destroyed?
> >
> > I need to close several files if the calling application has not done
so,
> > therefore I need to detect when the calling application is about to be
> > destroyed and clean up the files and variables I have used in the dll.
> >
> >
>
>

Very helpful John - why do people feel the need to interject without
actually helping the person who originally asked the question?
Joe, what John is referring to is that while your DllMain function is
executing a special critical section, normally referred to as the "process
critical section" is held. So certain things, anything that would cause
DllMain to be called again for example, cause very difficult to debug
deadlocks.
Here is an excellent explaination of the problem by Matt Pietrek:
http://www.microsoft.com/msj/archive/S220.aspx
TJ
"John Smith" <someone@some.where.inter.net> wrote in message
news:%23rwGpAztDHA.556@TK2MSFTNGP11.phx.gbl...
> Yes and no - read very CAREFULLY what you may and more important may NOT
do
> on PROCESS_ATTACH/DETACH...
>
> "Tom Jones" <tomjones16@hotmail.com> wrote in message
> news:%23Um9%23WstDHA.2368@TK2MSFTNGP09.phx.gbl...
> > You need to implement DllMain, the handle your cleanup tasks when you
> > receive a PROCESS_DETACH notification.
> >
> > Check out:
> >
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/_core_initialize_non.2d.mfc_dlls.asp
> >
> > "Joe Estock" <jestock@NOSPAMnutextonline.com> wrote in message
> > news:vshql393gd63ba@corp.supernews.com...
> > > Is there any way to detect when an application that is calling my dll
is
> > > about to be destroyed?
> > >
> > > I need to close several files if the calling application has not done
> so,
> > > therefore I need to detect when the calling application is about to be
> > > destroyed and clean up the files and variables I have used in the dll.
> > >
> > >
> >
> >
>
>

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In article <u#Tsr9rdGHA.3792@TK2MSFTNGP03.phx.gbl>, Petter says...
> How can my MFC based application use a hyperlink to open a specific sheet in
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>-----Original Message-----
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"Boll Weevil" <dryer@maytag.com> wrote in message
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Gur wrote:
> I have an MFC application with a regular MFC dll. In the dll, I need some
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"see07" <see07@yahoo.com> wrote in message
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> Hello
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> Somebody know where can I download gpconn.dll...

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